Results for "alkalinity"

Water Chemistry Medium 72 👍 3

How Do I Lower My Pool's Alkalinity Without Dropping pH Too Low?

I tested my pool water and alkalinity is at 150 ppm but my pH is already in the normal range. I don't want to add more acid and crash my pH—how can I lower alkalinity while keeping pH stable?…more

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Water Chemistry Easy 20 minutes 543 👍 0

Why Pool Alkalinity Gets High: 7 Common Causes Explained

Replaced my pool test strips last month but my 3-year-old liquid test kit is still showing crazy high alkalinity readings — time for a new kit? My kids swim almost daily during summer, so I want to make sure the water is safe for them.

I've been trying to figure out what might be making the alkalinity rise so I can prevent it from happening again. Is it something I'm adding to the pool? Could it be our new fountain feature? I just want to understand the common causes so I can keep the water balanced and safe for my family.…more

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Water Chemistry Medium 45 minutes 296 👍 0

Do I Need Alkalinity in My Pool? Essential Water Chemistry Guide

Staring at this rental property pool that I've never maintained before and the pH keeps bouncing from 6.8 to 8.2 no matter how much acid or soda ash I add. My pool guy mentioned something about alkalinity being important, but honestly at this point I'm wondering if it's just another way to get me to buy more chemicals.

Do I actually NEED to worry about alkalinity levels, or is it just marketing BS? I'm willing to do whatever it takes to get stable water, but I need to know if this is really going to help or if I'm just wasting more money on chemicals that won't fix my pH roller coaster.…more

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Water Chemistry Easy 30 minutes 410 👍 0

Why Pool Alkalinity Gets Low: 7 Common Causes & Solutions

Opened my pool this morning and the alkalinity had crashed again — only happens when it's above 85 degrees but stays perfectly normal during cooler weather. My kids swim in it almost daily during summer, so I'm really concerned about whether this is safe for them.

I'm trying to figure out what's causing this so I can fix it properly. We've had a lot of rain lately, and I've been shocking the pool more often because of increased usage. Could these things be making the alkalinity drop? What are the main reasons pool alkalinity gets low, and should I keep the kids out until I get it balanced again?…more

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Water Chemistry Easy 24 hours 447 👍 0

Can I Swim in High Alkalinity Pool? Safety & Solutions

This morning I'm standing in the pool store aisle staring at bottles of alkalinity reducer with no clue which one I actually need after my pool tested high. They're making it sound like it's dangerous to even dip a toe in the water, but I'm wondering if they're just trying to upsell me again.

Can I actually swim in my pool while the alkalinity is high, or is this a real safety issue? I'm getting tired of spending hundreds every time something is slightly off with my water chemistry. If it's not immediately dangerous, I'd rather take some time to research DIY solutions instead of buying whatever overpriced fix they're pushing this week.…more

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Water Chemistry Easy 30 minutes 345 👍 0

How to Increase Pool Alkalinity Fast - Complete Guide 2026

So there's this pool guy telling me to drain and refill my entire pool just because my alkalinity hit zero, but that sounds like expensive overkill for some cloudy water. Every time I try to balance the pH, it just crashes back down within a day or two.

I've got a 20,000 gallon pool and honestly I'm tired of throwing random chemicals at this problem. What's the RIGHT way to get my alkalinity back up to where it should be? I need specific amounts and steps because clearly what I've been doing isn't working.…more

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Water Chemistry Easy 2-3 hours (including circulation time) 522 👍 0

How to Raise Pool Alkalinity: Complete Step-by-Step Guide

Last week my pool's alkalinity dropped and now I'm trying to decide between sodium bicarbonate and alkalinity increaser to get it back up. I've heard baking soda works but I'm not sure how much to use or what the process actually looks like.

Anyone have a step-by-step on the right amount to add and timing? Want to make sure I don't mess this up and end up with more chemistry issues than I started with!…more

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Water Chemistry Medium 2-4 hours 817 👍 0

How to Lower Pool Alkalinity: Complete Step-by-Step Guide

Pulled three different recommendations for my 180 ppm alkalinity—pool guy wants muriatic acid, store pushes sodium bisulfate, and online forums are completely split. Need to get it down to proper range. What chemicals work best and how much should I use? Pool is about 10,000 gallons.…more

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Water Chemistry Easy 30 minutes 533 👍 0

How Long After Adding Alkalinity Can You Swim? Safe Wait Times

Three hours after dumping alkalinity increaser into our pool, my kids are still pestering me about when they can finally jump back in. I want to make sure it's completely safe before I give them the okay.

How long should I really wait after adding the alkalinity increaser? I know it needs time to circulate and dissolve properly, but I'm not sure if 20-30 minutes is enough or if I should wait longer. Our pump runs pretty well, but I'd rather be overly cautious when it comes to the kids' safety.…more

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Water Chemistry Medium 6-8 hours 670 👍 20

Can I Shock Pool After Adding Alkalinity? Timing Guide

Walked out to check my 20,000 gallon inground pool after dosing it with sodium bicarbonate this morning to raise alkalinity from 60 ppm to 100 ppm, and now I'm second-guessing my shocking timeline. My pH was sitting at about 7.2 before I added the alkalinity increaser, but I know adding baking soda can bump up the pH as well.

I'm planning to shock the pool tonight since we've had some heavy swimmer load this week and the water is starting to look a bit cloudy. Should I wait a certain amount of time after adding the alkalinity before I shock? I want to make sure the shock is as effective as possible and I've heard that pH levels can affect how well chlorine works.

My current test results show chlorine at 1.5 ppm, alkalinity should now be around 100 ppm, and I'm not sure what the pH has risen to after adding the sodium bicarbonate earlier today.…more

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Water Chemistry Easy 30 minutes 215 👍 0

Do You Need Pool Chemicals? Essential Chemicals for Safe Water

Last weekend I grabbed my pool testing kit and decided to handle the chemistry myself — just need to figure out which chemicals are actually essential versus marketing hype. My neighbor swears by minimal chemical use while the pool store keeps pushing different products on me.

What chemicals do you ACTUALLY need to keep a pool safe for swimming? I don't want to over-treat my water with unnecessary stuff, but I also don't want anyone getting sick. Just looking for the bare minimum essentials that are truly required for safe, swimmable water.…more

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Water Chemistry Easy 30 minutes 311 👍 0

Do You Need Pool Chemicals With a Sand Filter? Complete Guide

Standing in the pool store for the third time this season while they push their entire chemical lineup on me just because I have a sand filter.

They act like I need their entire inventory just to keep my pool running. I've got a decent sand filter system that seems to be doing its job - the water looks clear and I'm not seeing any debris floating around.

But I'm wondering if I can cut back on some of these expensive chemicals or maybe even eliminate some altogether? The sand filter is catching all the physical stuff, so what exactly do I still need to be buying? I'd love to find some DIY solutions or at least understand what's actually necessary versus what they're just trying to upsell me on.…more

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Water Chemistry Medium 15-20 minutes 277 👍 1

Hot Tub & Spa Water Care Guide: Complete Chemistry Manual 2026

Hot tub water care requires maintaining proper pH (7.4-7.6), alkalinity (80-120 ppm), and sanitizer levels while following regular testing and chemical adjustment schedules. Higher temperatures and smaller water volumes make spas more sensitive to chemical imbalances than pools.…more

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Salt Water Medium 30 minutes 274 👍 0

Do Saltwater Pools Need Chemicals? Yes - Here's What You Need

Despite having a 15,000 gallon saltwater pool with a functioning salt system, the pool store keeps pushing $200+ worth of chemicals every month. They keep telling me I need all these pH adjusters, alkalinity boosters, and other expensive stuff on top of the salt. I thought the whole point of going saltwater was to avoid dealing with a bunch of chemicals!

I'm looking to handle this myself and cut down on costs, but I want to make sure I'm not missing something important. Does the salt chlorine generator really only make chlorine? What other chemicals do I actually NEED to keep my water balanced, and what can I skip?…more

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Water Chemistry Easy 30 minutes 336 👍 0

How to Raise Pool pH: Complete Guide to pH Increaser

Before I dump chemicals into my pool, I'm trying to decide between adding baking soda or actual pH increaser to bring it up from 7.0. The pool store told me I need to raise it, but they mentioned a couple different chemicals and I'm honestly a bit confused about which one to use.

I've heard about soda ash and baking soda, but I'm not sure what the difference is or how much I should add to my 20,000 gallon pool. I really don't want to mess this up and swing it too far the other way. Should I be adding the chemicals slowly, and do I need to have my pump running when I do it? Any guidance would be really appreciated!…more

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